/* Copyright (C) 2008  Romolo Camplani, Marco Fortunato, Marco Marelli, Guido Rota, Fabio A. Schreiber et al.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.dei.perla.parser.clauses;

import org.dei.perla.parser.util.GenericDictionary;

/**
 * Una collezione di <tt>HLGroupByField</tt>
 */
public class HLGroupByFieldList extends GenericDictionary<String, HLGroupByField> {
	
	/**
	 * Restituisce lo spezzone di codice "perla" corrispondente
	 */
	public String toString()
	{
		String stringToReturn = "";
		
		// Scorre tutti i campi..
		for(HLGroupByField tGroupByField : this) {
			
			// .. aggiunge una virgola di separazione
			if(!"".equals(stringToReturn))
				stringToReturn += ", "; 
			
			// .. aggiunge il campo corrente
			stringToReturn += tGroupByField;
		}
		
		// Ritorna la stringa costruita
		return stringToReturn;
	}
}
